Abstract
A compact phased-array antenna acousto-optic beam former with element-level analog phase (0-27π) and amplitude control using nematic-liquid-crystal display-type technology is experimentally demonstrated. Measurements indicate >6-bit phase control and 52.6 dB of amplitude-attenuation control. Highquality error calibration and antenna sidelobe-level control is possible with this low-control-power analog beam former. Optical system options using rf Bragg cells or wideband Bragg cells are discussed, with the rf design being the current preferred approach. Transmit-receive beam forming based on frequency upconversion-downconversion by electronic mixing is introduced for the rf Bragg-cell beam former, and comparisons with digital beam forming are highlighted. A millimeter-wave signal generation and control optical architecture is described.
| Original language | English |
|---|---|
| Pages (from-to) | 3712-3724 |
| Number of pages | 13 |
| Journal | Applied Optics |
| Volume | 33 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 10 Jun 1994 |
| Externally published | Yes |
Keywords
- Analog
- Bragg cells
- Nematic liquid crystals
- Phased-array antenna
Fingerprint
Dive into the research topics of 'Acousto-optic liquid-crystal analog beam former for phased-array antennas'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver